Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X250-10
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X250-10 is a genuine double-acting aluminum-barrel mini cylinder with a Ø20mm bore, a 250mm nominal stroke and a rear adjustable-stroke stopper — trim up to 10mm for a usable window of 240–250mm. Adjustable air cushion (both ends).
- BoreØ20 mm
- Stroke250 mm
- Adjustable240–250 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionAdjustable air cushion (both ends)
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X250-10
The AirTAC MBLCJ20X250-10 is a compact double-acting aluminum mini cylinder featuring a rear travel adjuster and an adjustable air cushion at both ends. It delivers 157 N of push force and 132 N of pull force at 0.5 MPa. The 10 mm rear stopper lets you fine-tune the end position, creating a usable stroke window of 240-250 mm for precise 250 mm class tasks.
This SKU lacks a built-in magnet (-S omitted), meaning it cannot accept CMSG, DMSG, or EMSG position sensors. The tunable air cushion allows you to dial in end-of-stroke deceleration for faster moves without slamming the end covers, a distinct advantage over the fixed rubber bumper found on the MBLJ series. Note the overall length extends by the adjustment amount (A + 2 x stroke + adjust), and the Ø8 mm carbon-steel rod with 20 µm hard-chrome plating requires an external guide to prevent side-load bending over this long 250 mm travel.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X250-10 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X250-10 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø20 mm |
| Nominal stroke | 250 mm |
| Adjustable window | 240–250 mm (trim 10 mm) |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M8×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable air cushion (both ends) |
| Max standard stroke | Up to 300 mm |
The rear stopper sets the end position — it is a travel stop, not a lock. Overall length = A + 2 × stroke + adjustable stroke. MBLJ/MBLCJ mounting is Basic / FA / LB only (no SDB, no back-cover code). Thread options: PT / G / NPT.
Theoretical Output Force (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | — |
| Max (@1.0 MPa) | 32 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a margin.
Model Code: Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X250-10
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 20 | Bore size in mm. |
| ×250 | Nominal stroke length in mm. |
| -10 | Adjustable-stroke amount (mm you can trim at the rear). |
| S | Optional built-in magnet for a CMSG/DMSG/EMSG sensor switch. |
Related: MBLJ (adjustable stroke, fixed bumper), MBL (fixed stroke), MBLD (double rod).
Where the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X250-10 Is Used
PCB Edge Belt Routing
Drives a 250 mm routing arm in conveyorized electronics assembly, using the 240-250 mm adjustable window to dial in exact board handoff points with 157 N of thrust.
Light-Part Ejection
Ejects molded plastic caps from a press, relying on the adjustable air cushion to decelerate the 250 mm travel smoothly without slamming the rear cover.
Packaging Flap Folding
Extends to fold light cardboard flaps on a packaging line, where the compact 20 mm body fits tight clearances and the PT-threaded G1/8 port simplifies pneumatic plumbing.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X250-10 the Right Cylinder?
Choose this 20 mm bore when you need 157 N of thrust at 0.5 MPa. If your application requires less force, the smaller neighbour is unavailable in this series, but if you need to step up, the 25 mm bore provides 245 N of push force. Compared to the MBLJ, this MBLCJ variant uses a screw-tunable air cushion rather than a fixed bumper to protect the end covers during high-speed transitions.
The rear 10 mm adjuster sets the travel end-point but is strictly a mechanical stop, not a load-holding lock; the cylinder will drift without live air pressure. Mounting is limited to Basic, FA (flange), or LB (foot) styles—there is no back-cover or SDB pivot option. To replace this unit, match the 20 mm bore, 250 mm stroke, 10 mm adjust code, G1/8 port, PT thread, and confirm no magnet is required. Because the stroke is 250 mm, an external guide is highly recommended to prevent rod deflection.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Adjustable window fits your end position
- ✓ Adjuster is a travel stop, not a lock
- ✓ Magnet (S) for sensors?
- ✓ Side load — add a guide on long strokes
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Set the rear stopper for the end position (a travel stop, not a lock).
- check Avoid side load; add an external guide on long strokes.
- check Mounting: Basic / FA flange / LB foot (no SDB, no back-cover code).
- check Installation by qualified personnel per AirTAC docs.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X250-10 FAQ
At 0.5 MPa, this 20 mm bore cylinder provides 157 N of push force and 132 N of pull force. At 0.7 MPa, the push force increases to 220 N. The maximum theoretical force is 32 kgf at 1.0 MPa.
This specific SKU lacks the -S magnet, so it cannot accept CMSG, DMSG, or EMSG position sensors. The 10 mm rear adjuster allows you to trim the travel end-point, creating a usable window of 240-250 mm. This stopper sets the end position but does not lock or hold the load; the separate adjustable air cushion only controls end-of-stroke deceleration.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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